package com.xiangge.test;


public class Demo3 {
    public static void main(String[] args) {
        String str = yanzhengma();
        System.out.println("验证码 ： " + str);
    }

    public static String yanzhengma() {
        String str = "";
        char[] strs = {
                '0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F',
                'G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V',
                'W','X','Y','Z','a','b','c','d','e','f','g','h','i','j','k','l',
                'm','n','o','p','q','r','s','t','u','v','w','x','y','z'
        };
        for (int i = 1; i <= 5; i++) {
            str = str + strs[(int)(Math.random()*(58+1-1)) + 1];
        }
        return str;
    }
}
